You are really underestimating the community's ability to make Blizzard look bad.
Asking players if they want player housing should make it easy honestly. Blizzard is desperate and willing to do anything to salvage their failing userbase. Then you mention how player housing is only done by successful MMOs, casually omitting things like Wildstar or other failing/failed MMOs with housing, and suddenly you have a "solid" argument for why player housing=WoW bad.
If I were to guess why noone has mentioned it, I would assume it's because the player housing thing didn't register, possibly by being buried among other questions for what would work in WoW or however the question was phrased.